DEVICE FOR SIGNALLING AIR PRESSURE DROP IN VEHICLE TYRES Russian patent published in 2009 - IPC B60C23/02 

FIELD: physics; motor car construction.

SUBSTANCE: present invention relates to motor car construction and can be used in other engineering fields, where there is need to control air pressure in tyres. The device contains a threshold pressure sensor, made in a separate housing and fitted on the boss or rim of a wheel. A radio transmitter is also fitted, together with an accumulator battery inside a case, connected to a power supply circuit, with provision for launching when pressure in the tyre drops. There is also a radio receiver, fitted inside the vehicle. The sensor is joined to the nipple through a hose, and is made in form of a tube spring, the rounded radius of which, if pressure inside the tyre falls, and thus inside the spring itself, will become smaller, and the free end of which will come into contact with a contact, including the radio transmitter, signalling pressure fall.

EFFECT: simple design and provision for accessible and reliable operation of the device, as well as prevention of accidents and provision for integrity of the vehicle tyre.

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